Xia Xiaona, Liu Guanlin, Chen Lin, Li Wenlong, Xi Yi, Shi Haofei, Hu Chenguo
Department of Applied Physics, Chongqing University, Chongqing 400044, People's Republic of China.
Nanotechnology. 2015 Nov 27;26(47):475402. doi: 10.1088/0957-4484/26/47/475402. Epub 2015 Nov 3.
An easily foldable and portable triboelectric-electromagnetic generator (TEMG) based on two polymer/Al layers and one copper coil has been designed to harvest ambient mechanical energy, where the copper coil is used both as a spring to achieve contact and separation of triboelectric layers and as a circuit to collect electromagnetic-induced electricity. The output performance of the TEMG is approximately reproducible after being folded many times. The working mechanism is discussed. The output performance of individual triboelectric generator (TEG) and electromagnetic generator (EMG) are systematically investigated. The maximum output current, voltage, and power are obtained to be 32.2 μA, 500 V, and 2 mW for the TEG, and 4.04 mA, 30 mV, and 15.8 μW for the EMG, respectively. The TEG with a higher internal resistance can be used as a current source, while the EMG with a lower resistance can be used as a voltage source. It can be used as a mobile light source via integrating the TEMG in clothes or bags, and as a self-powered gas flow sensor for detecting respiratory rate, which has a potential application in medical diagnoses. The simple structure and easy portability of the TEMG could be used widely in daily life to harvest ambient energy for electronic devices.
一种基于两层聚合物/铝层和一个铜线圈的易于折叠和便携的摩擦电-电磁发电机（TEMG）被设计用于收集环境机械能，其中铜线圈既用作实现摩擦电层接触和分离的弹簧，又用作收集电磁感应电的电路。TEMG在多次折叠后其输出性能大致可重现。讨论了其工作机制。系统研究了单个摩擦电发电机（TEG）和电磁发电机（EMG）的输出性能。TEG的最大输出电流、电压和功率分别为32.2 μA、500 V和2 mW，EMG的最大输出电流、电压和功率分别为4.04 mA、30 mV和15.8 μW。具有较高内阻的TEG可作为电流源，而具有较低电阻的EMG可作为电压源。通过将TEMG集成在衣服或袋子中，它可以用作移动光源，并且作为用于检测呼吸频率的自供电气体流量传感器，在医学诊断中具有潜在应用。TEMG的简单结构和易于携带性可在日常生活中广泛用于为电子设备收集环境能量。
